trextr7monkey
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| posted on 21/11/08 at 10:07 PM |
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Lots of info on British Plastics Federation website- thermoplastics can be heated up and cooled down lots of times in theory. Doesn't always
work with the vac former!
Themosetting is a one way (chemical process), think araldite and epoxy resins, brittle electrical fittings that shatter when dropped etc
The cup and saucer can be recycled and re used in injection moulding process if made from the usual thermoplastics already listed
As a bit of an aside but partly of relevance have you had a look at polymorph - Rapid Electronics sell it as well as others - plastic granules come
in a bag, pour on boiling water, it goes all soft you then mould / shape / and it cools and sets solid.
Also have a look at the TEP site from Middlesex Uni - full of useful stuff including Smart materials and some plastic with a memory 
http://www.flickr.com/photos/14016102@N00/ (cut and paste this dodgey link)
Our most recent pics are here:
http://s129.photobucket.com/albums/p211/trextr7monkey/
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D Beddows
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| posted on 21/11/08 at 10:30 PM |
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quote:
Would you have to park in the shade in the summer (assuming we have one!)
lol 
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austin man
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| posted on 21/11/08 at 10:40 PM |
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I bought some plastic of the bay of e which became mouldable when left in boiling water and set hard when cool, it could be softened time and time
again using the same method
The name of it was polymorph
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carpmart
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| posted on 21/11/08 at 11:10 PM |
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Yep, I've used polymorph extensively over the last couple of years!
Great stuff and as hard as you can imagine when cold but amazingly supple when softened in boiling water.
Example in below link!
http://cgi.ebay.co.uk/100g-Polymorph-Thermoplastic-Moulding-Compound-100g_W0QQitemZ300226021255QQcmdZViewItemQQptZUK_Crafts_Other_Crafts_EH?hash=item3
00226021255&_trksid=p3286.c0.m14&_trkparms=72%3A1301|66%3A2|65%3A12|39%3A1|240%3A1318
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
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Peteff
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| posted on 21/11/08 at 11:23 PM |
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Morphplast.
Comes in granule form and can be heated and reused, that's the one. Google it and it comes up on ebay.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Humbug
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| posted on 22/11/08 at 09:44 AM |
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Lightweight chassis so if you have a crash they can heat it up and form it into a stretcher?
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chrisg
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| posted on 22/11/08 at 01:55 PM |
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Or a coffin?
I've been looking at the suggested materials and they all seem to be more suited to "blocks" of material rather than
"sheets" which you would need for body panels.
The ideal would be a plastic which is used in packaging etc that could be made into body panels by melting and reforming, then it would be better from
a recycling point of view.
Maybe looking for something which doesn't exist, now where's that chemistry set I got for my 10th birthday?
Cheers
Chris
Note to all: I really don't know when to leave well alone. I tried to get clever with the mods, then when they gave me a lifeline to see the
error of my ways, I tried to incite more trouble via u2u. So now I'm banned, never to return again. They should have done it years ago!
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L5W
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| posted on 22/11/08 at 02:57 PM |
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We use various grades of polyethylenes and polypropylenes where I work - injection moulded packaging products. For some products, we'll re-grind
the left over sprues and mould this material again into good parts. Anything we cant use again such as purgings are taken away by Plasgran, bit more
info on their website. http://www.plasgranltd.co.uk/
The parts we make are fairly small, all less then 100mm in diameter so I don't know how good these materials would be in sheet form for making
larger body panels.
cheers
Lee
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